GuillaumeJalenquesDL
Paris
Chairman and Chief Executive Officer
Guillaume joined Mansartis in 1992. Under his leadership the company, founded in 1982 by his father, has expanded in the merger and acquisition and the family office activities while at the same time remaining committed to the company’s historical core values. He led the development of the portfolio management business for non-profit institutions.
He started his career in 1982 with Brown Brothers Harriman & Co in New York as salesman in US equities. He was appointed in 1988 head of the branch in Paris, before joining the London office in 1990 as head of the asset management subsidiary.
Guillaume graduated from Essec Business school and is a CFA charterholder. He is a member of the Enforcement Committee of the French Regularity Authority (AMF).